Implant and method for altering the refractive properties of the eye
First Claim
1. A method of changing the refractive properties of an eye, comprising the steps of separating the cornea to form a first layer and a second layer, said first layer facing in a posterior direction of the eye and said second layer facing in an anterior direction of the eye, said first and second layers remaining attached at an area at the main optical axis, inserting an implant between said first and second layers, said implant including a first portion having a first index of refraction and adapted to change the refractive properties of a first portion of the eye, a second portion having a second index of refraction and adapted to change the refractive properties of a second portion of the eye, and a third portion having a substantially arcuate edge adapted to be positioned adjacent the area attached at the main optical axis.
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Abstract
The present invention relates an implant and method for changing the refractive properties of an eye. The implant includes a body adapted to be implanted between layers of the cornea offset from the main optical axis, thereby changing the refractive properties of the eye. The body includes a first portion having a first refractive power and configured to change the refractive properties of a first area of the cornea by changing the corneal curvature thereof, and a second portion having a second refractive power, the second refractive power configured to change the refractive properties of a second area of the cornea and compensate for error at the second area caused by the first portion.
119 Citations
21 Claims
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1. A method of changing the refractive properties of an eye, comprising the steps of
separating the cornea to form a first layer and a second layer, said first layer facing in a posterior direction of the eye and said second layer facing in an anterior direction of the eye, said first and second layers remaining attached at an area at the main optical axis, inserting an implant between said first and second layers, said implant including a first portion having a first index of refraction and adapted to change the refractive properties of a first portion of the eye, a second portion having a second index of refraction and adapted to change the refractive properties of a second portion of the eye, and a third portion having a substantially arcuate edge adapted to be positioned adjacent the area attached at the main optical axis.
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12. An implant for changing the refractive properties of an eye, comprising:
a body adapted to be implanted between layers of the cornea offset from the main optical axis, thereby changing the refractive properties of the eye, the body including a first portion having a first refractive power and configured to change the refractive properties of a first area of the cornea by changing the corneal curvature thereof; and
a second portion having a second refractive power, said second refractive power configured to change the refractive properties of a second area of the cornea and 4 compensate for error at said second area caused by said first portion. - View Dependent Claims (13, 14, 15, 16)
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17. An implant for changing the refractive properties of an eye, comprising:
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a first semi circular body portion adapted to be implanted between layers of the cornea offset from the main optical axis, thereby changing the refractive properties of the eye, the first semi circular body portion including a first portion having a first refractive power and configured to change the refractive properties of a first area of the cornea by changing the corneal curvature thereof; and
a second portion having a second refractive power, said second refractive power configured to change the refractive properties of a second area of the cornea and compensate for error at said second area caused by said first portion; and
a second semi circular body portion adapted to be implanted between layers of the cornea offset from the main optical axis, thereby changing the refractive properties of the eye, the second semi circular body portion including a third portion having a third refractive power configured to change the refractive properties of a third area of the cornea by changing the corneal curvature thereof; and
a fourth portion having a fourth refractive power, said fourth refractive power configured to change the refractive properties of a fourth area of the cornea and compensate for error at said second area caused by said third portion.
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18. A method of changing the refractive properties of the an eye, comprising the steps of
separating the cornea to form a first layer and a second layer, said first layer facing in a posterior direction of the eye and said second layer facing in an anterior direction of the eye, said first and second layers remaining attached at an area at the main optical axis, inserting a first semi-circular implant between said first and second layers, said first implant including a first portion having a first index of refraction and adapted to change the refractive properties of a first portion of the eye, and a second portion having a second index of refraction and adapted to change the refractive properties of a second portion of the eye; - and
inserting a second semi-circular implant between said first and second layers, said second implant including a third portion having a third index of refraction and adapted to change the refractive properties of a third portion of the eye, a fourth portion having a fourth index of refraction and adapted to change the refractive properties of a fourth portion of the eye. - View Dependent Claims (19, 20, 21)
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Specification